Power Supply

The external power supply is rated at 19V 3.42A. The one that came with the laptop was manufactured by
Delta Electronics and carried the part # SADP-65KB A. eBay will find many supplies that quote the
main number - many laptop chargers these days are 65W 19V supplies. I wondered whether the A on
the end may indicate the type of tip fitted but I almost immediately found one with a straight connector
on the end of the cable - my one has a right angle connector. Anyway, as far as I can determine, the plug
appears to be a standard 5.5mm/2.5mm plug.

Expansion features

Everything is accessible on the underneath of the X90cw. Unlike some laptops/netbooks there are no
expansion components located under the keyboard.

Memory

Flash/Disk: The X90 is fitted with a SATA DOM. This looks quite small and lonely as it is
fitted in the space for a convential 2.5" disk or SSD. The Linux lspci command tells us
that the controller is a JMicron JMB363 which is a SATA II controller (300GB/s). With a conventional
2.5" drive bay available, it is a simple matter to fit a high capacity alternative to the DOM.

Ram: There is a single SODIMM socket to take the RAM. I fitted a 2GB PC2-6400S Hynix
part which worked perfectly. The maximum amount of RAM mentioned in the Wyse datasheet is 2GB.
I don't know if that is their application limit or the physical limit of the hardware. The SCH US15W
datasheet does say Support for a maximum of 2GB of DRAM.

SD Card: There is a card slot on the right-hand side of the X90cw. The data sheet identifies
this as a 'Media slot 4-in-1 (MS/MS-Pro/SD/MMC). In a brief check I made of this socket it successfully
recognised an anonymous 2GB SD card I had. It gave r/w errors with a 16GB SDHC card, so it is probably
SD only.

Wireless

802.11: The X90cw comes with a wireless card fitted. I was confused for a while here as I
assumed that it was a mPCIe expansion card and yet it didn't appear in the PCI listing. It turns out
that the card - an AW-NU706H - actually appears on the USB bus:

The first item in the list is the integrated webcam, the next the wireless card and the last
the 1GB flash drive that I'd booted Tiny Core from.

The AzureWave AW-NU706H is described in its data sheet as being an USB Half-Mini-card. This is an
area I don't know much about - and wasn't even aware of before I came across the X90. It seems
to be mixed in with PCIe but using USB 2.0 which is also available on the BUS.

Bluetooth: The X90 has an FCC/CE label on the bottom which mentions an AzureWave BT252 Bluetooth module.
I can't see any sign of bluetooth in the Tiny Core data, but it does appear in the Windows
Device Manager.

Mobile: There is a similar slot to the one used by the wireless card just by it. This has some aerial
cables by it labelled WLAN. I subsequently got hold of a second example of the X90 and this
one came with a Sierra Wireless MC8780 mobile PCIe module fitted here.

Other expansion slot

There is another socket near the SATA connector. This looks like it may be an mSATA socket
for an SSD. Once again anything I tried plugging in here was not recognised.